$73+ Cheap flights from Ontario (ONT) to Wisconsin
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MKE
Apr 26 — May 31
Round-trip
1 adult, Economy
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Cheapest flights from Ontario to WisconsinExplore the most affordable flight options available from Ontario to Wisconsin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2026.
Explore the most affordable flight options available from Ontario to Wisconsin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2026.
This Frontier deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2212:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Sun 4/2611:47 am
MSP
- ONT
1 stop14h 09m
Frontier
Deal found 3/27![Frontier logo]()
$160
This Booking.com deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Mon 5/119:39 pm
MSP
- ONT
1 stop28h 10m
Frontier
Deal found 3/26![Frontier logo]()
$162
This Booking.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Sun 5/36:45 am
MSP
- ONT
1 stop26h 46m
Frontier
Deal found 3/25![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2710:50 am
ONT
- MSP
1 stop20h 29m
Frontier
Wed 6/39:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 3/25![Frontier logo]()
$168
This CheapOair deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Thu 5/710:14 am
MSP
- ONT
1 stop25h 51m
Frontier
Deal found 3/27![Frontier logo]()
$171
This Booking.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Mon 4/276:45 am
MSP
- ONT
1 stop19h 10m
Frontier
Deal found 3/25![Frontier logo]()
$172
This Frontier deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Mon 4/2711:47 am
MSP
- ONT
1 stop13h 56m
Frontier
Deal found 3/27![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/13:30 pm
ONT
- MSP
2 stops15h 49m
Frontier
Wed 6/39:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 3/26![Frontier logo]()
$187
This Booking.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/212:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Fri 5/89:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 3/25![Frontier logo]()
$192
This CheapOair deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/305:43 pm
ONT
- MSP
1 stop28h 15m
Frontier
Sun 5/36:45 am
MSP
- ONT
1 stop26h 46m
Frontier
Deal found 3/24![Frontier logo]()
$196
This CheapOair deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:33 pm
ONT
- MKE
1 stop22h 01m
Frontier
Mon 4/275:05 pm
MKE
- ONT
1 stop8h 50m
Frontier
Deal found 3/24![Frontier logo]()
$196
This Booking.com deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Sun 5/1010:14 am
MSP
- ONT
1 stop25h 51m
Frontier
Deal found 3/26![Frontier logo]()
$198
Best flights from Ontario to WisconsinDiscover carefully curated flight deals from Ontario to Wisconsin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 27, 2026.
Discover carefully curated flight deals from Ontario to Wisconsin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 27, 2026.
This CheapOair deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1712:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Wed 4/2911:15 am
MSP
- ONT
1 stop22h 16m
Frontier
Deal found 3/22![Frontier logo]()
$196
This Delta deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:15 pm
ONT
- MKE
1 stop8h 50m
Delta
Mon 4/272:50 pm
MKE
- ONT
1 stop8h 10m
Delta
Deal found 3/24![Delta logo]()
$337
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/301:40 pm
ONT
- ORD
1 stop8h 17m
United Airlines
Mon 5/48:09 pm
ORD
- ONT
Nonstop4h 26m
United Airlines
Deal found 3/26![United Airlines logo]()
$351
This Southwest deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:30 am
ONT
- ORD
2 stops10h 25m
Southwest
Wed 4/296:15 am
ORD
- ONT
2 stops10h 50m
Southwest
Deal found 3/26![Southwest logo]()
$359
This Alaska Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:00 am
ONT
- MSP
1 stop7h 16m
Alaska Airlines
Tue 4/213:01 pm
MSP
- ONT
1 stop7h 22m
Alaska Airlines
Deal found 3/26![Alaska Airlines logo]()
$426
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:06 pm
ONT
- ATW
2 stops24h 38m
Multiple Airlines
Mon 6/84:58 pm
ATW
- ONT
1 stop8h 51m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$459
This American Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:35 pm
ONT
- LSE
2 stops12h 00m
American Airlines
Thu 4/3010:05 am
LSE
- ONT
2 stops13h 02m
American Airlines
Deal found 3/25![American Airlines logo]()
$600
This Southwest deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:40 pm
ONT
- MSP
2 stops8h 20m
Southwest
Mon 5/116:10 pm
MSP
- ONT
2 stops6h 55m
Southwest
Deal found 3/24![Southwest logo]()
$373
This Delta deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:49 pm
ONT
- MSN
1 stop7h 38m
Delta
Tue 5/52:41 pm
MSN
- ONT
2 stops11h 03m
Delta
Deal found 3/24![Delta logo]()
$374
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/101:43 pm
ONT
- ATW
2 stops8h 15m
United Airlines
Thu 4/303:45 pm
ATW
- ONT
1 stop8h 50m
United Airlines
Deal found 3/26![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:49 pm
ONT
- GRB
1 stop8h 12m
Delta
Sat 5/96:20 am
GRB
- ONT
2 stops7h 59m
Delta
Deal found 3/25![Delta logo]()
$393
This Southwest deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3010:15 am
ONT
- ORD
2 stops10h 05m
Southwest
Wed 6/311:55 am
ORD
- ONT
2 stops9h 40m
Southwest
Deal found 3/23![Southwest logo]()
$399
This Alaska Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/187:00 am
ONT
- MSP
1 stop7h 01m
Alaska Airlines
Sun 7/266:17 pm
MSP
- ONT
1 stop7h 37m
Alaska Airlines
Deal found 3/24![Alaska Airlines logo]()
$467
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:10 am
ONT
- MKE
1 stop7h 18m
United Airlines
Sat 5/21:46 pm
MKE
- ONT
1 stop6h 15m
United Airlines
Deal found 3/26![United Airlines logo]()
$431
This Delta deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/110:15 pm
ONT
- GRB
2 stops11h 03m
Delta
Thu 6/46:20 am
GRB
- ONT
2 stops7h 59m
Delta
Deal found 3/23![Delta logo]()
$404
This Southwest deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:30 am
ONT
- ORD
2 stops9h 50m
Southwest
Tue 4/216:15 am
ORD
- ONT
2 stops10h 50m
Southwest
Deal found 3/25![Southwest logo]()
$406
This Alaska Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2312:02 pm
ONT
- MSP
1 stop9h 57m
Alaska Airlines
Tue 6/306:17 pm
MSP
- ONT
1 stop7h 37m
Alaska Airlines
Deal found 3/26![Alaska Airlines logo]()
$467
This United Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/41:18 pm
ONT
- ATW
1 stop5h 46m
United Airlines
Mon 6/85:30 pm
ATW
- ONT
1 stop7h 16m
United Airlines
Deal found 3/22![United Airlines logo]()
$442
This Delta deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/71:00 pm
ONT
- MSN
2 stops8h 00m
Delta
Tue 8/186:15 am
MSN
- ONT
2 stops8h 14m
Delta
Deal found 3/26![Delta logo]()
$414
This Alaska Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/302:09 pm
ONT
- MSP
1 stop7h 50m
Alaska Airlines
Mon 7/136:17 pm
MSP
- ONT
1 stop7h 37m
Alaska Airlines
Deal found 3/24![Alaska Airlines logo]()
$467
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:00 am
ONT
- DLH
1 stop9h 07m
United Airlines
Sat 4/253:08 pm
DLH
- ONT
1 stop9h 23m
United Airlines
Deal found 3/26![United Airlines logo]()
$458
This Delta deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/161:29 pm
ONT
- MKE
1 stop5h 52m
Delta
Sun 4/267:25 am
MKE
- ONT
1 stop6h 49m
Delta
Deal found 3/25![Delta logo]()
$423
This Alaska Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:09 pm
ONT
- MSP
1 stop7h 50m
Alaska Airlines
Thu 7/166:17 pm
MSP
- ONT
1 stop7h 37m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$467
This Southwest deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:40 pm
ONT
- MSP
2 stops7h 25m
Southwest
Sun 4/196:30 am
MSP
- ONT
2 stops7h 45m
Southwest
Deal found 3/26![Southwest logo]()
$470
This American Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:02 pm
ONT
- CWA
2 stops12h 16m
American Airlines
Fri 8/149:49 am
CWA
- ONT
2 stops13h 50m
American Airlines
Deal found 3/27![American Airlines logo]()
$644
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:13 pm
ONT
- CWA
2 stops12h 57m
United Airlines
Mon 8/1710:45 am
CWA
- ONT
1 stop9h 34m
United Airlines
Deal found 3/26![United Airlines logo]()
$463
This Delta deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:00 am
ONT
- MSN
2 stops9h 47m
Delta
Sat 4/116:00 am
MSN
- ONT
2 stops12h 28m
Delta
Deal found 3/23![Delta logo]()
$429
This Southwest deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:20 am
ONT
- MKE
1 stop6h 05m
Southwest
Mon 8/178:50 am
MKE
- ONT
1 stop7h 10m
Southwest
Deal found 3/23![Southwest logo]()
$477
This Alaska Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/107:00 am
ONT
- MSP
1 stop7h 16m
Alaska Airlines
Tue 4/143:01 pm
MSP
- ONT
1 stop7h 22m
Alaska Airlines
Deal found 3/25![Alaska Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:00 am
ONT
- GRB
1 stop6h 12m
United Airlines
Tue 4/215:40 pm
GRB
- ONT
1 stop6h 51m
United Airlines
Deal found 3/23![United Airlines logo]()
$469
Last-minute flights from Ontario to WisconsinDiscover last-minute flight deals from Ontario to Wisconsin. Data last updated March 27, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Wisconsin. Data last updated March 27, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:20 am
ONT
- MSP
1 stop9h 33m
Frontier
Mon 4/2011:47 am
MSP
- ONT
1 stop13h 56m
Frontier
Deal found 3/24![Frontier logo]()
$206
This CheapOair deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Fri 4/1711:47 am
MSP
- ONT
1 stop14h 11m
Frontier
Deal found 3/24![Frontier logo]()
$216
This Frontier deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Sat 4/257:50 am
MSP
- ONT
1 stop18h 05m
Frontier
Deal found 3/25![Frontier logo]()
$207
This Frontier deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1912:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Mon 5/41:30 pm
MSP
- ONT
1 stop12h 25m
Frontier
Deal found 3/25![Frontier logo]()
$205
This Frontier deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2212:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Sun 4/2611:47 am
MSP
- ONT
1 stop14h 09m
Frontier
Deal found 3/27![Frontier logo]()
$160
This Frontier deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Mon 4/2711:47 am
MSP
- ONT
1 stop13h 56m
Frontier
Deal found 3/27![Frontier logo]()
$185
This CheapOair deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:33 pm
ONT
- MKE
1 stop22h 01m
Frontier
Mon 4/275:05 pm
MKE
- ONT
1 stop8h 50m
Frontier
Deal found 3/24![Frontier logo]()
$196
This Expedia deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Fri 5/11:30 pm
MSP
- ONT
1 stop12h 25m
Frontier
Deal found 3/27![Frontier logo]()
$210
This Booking.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Mon 4/276:45 am
MSP
- ONT
1 stop19h 10m
Frontier
Deal found 3/25![Frontier logo]()
$172
This Booking.com deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Sun 5/36:45 am
MSP
- ONT
1 stop26h 46m
Frontier
Deal found 3/26![Frontier logo]()
$167
This CheapOair deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Thu 5/710:14 am
MSP
- ONT
1 stop25h 51m
Frontier
Deal found 3/27![Frontier logo]()
$171
This CheapOair deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Tue 5/59:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 3/24![Frontier logo]()
$196
One-way flights from Ontario to WisconsinSearch for one-way flight options from Ontario to Wisconsin. Find affordable one-way fares based on user searches. Data last updated March 27, 2026.
Search for one-way flight options from Ontario to Wisconsin. Find affordable one-way fares based on user searches. Data last updated March 27, 2026.
This Trip.com deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2012:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Deal found 3/26![Frontier logo]()
$73
This Trip.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Deal found 3/25![Frontier logo]()
$78
This Super.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:59 am
ONT
- ORD
1 stop6h 51m
Frontier
Deal found 3/25![Frontier logo]()
$79
This Frontier deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Deal found 3/27![Frontier logo]()
$80
This Frontier deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1210:50 am
ONT
- ORD
1 stop7h 47m
Frontier
Deal found 3/23![Frontier logo]()
$82
This Trip.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2612:59 am
ONT
- MSP
1 stop8h 03m
Frontier
Deal found 3/25![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/810:50 am
ONT
- ORD
1 stop7h 47m
Frontier
Deal found 3/25![Frontier logo]()
$83
This Super.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:26 am
ONT
- ORD
1 stop28h 51m
Frontier
Deal found 3/25![Frontier logo]()
$85
This Booking.com deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/106:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Deal found 3/27![Frontier logo]()
$86
This Frontier deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:00 am
ONT
- ORD
1 stop12h 37m
Frontier
Deal found 3/27![Frontier logo]()
$86
This Gotogate deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:59 am
ONT
- MSP
1 stop20h 59m
Frontier
Deal found 3/23![Frontier logo]()
$87
This Frontier deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:00 am
ONT
- ORD
1 stop12h 37m
Frontier
Deal found 3/23![Frontier logo]()
$87
Find flight deals from Ontario to Wisconsin
Keep the following information in mind while searching for Ontario to Wisconsin flight deals. Data was last updated March 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $160 (Frontier) |
One-way from | $73 (Trip.com) |
Popular in | February |
Cheapest in | August |
Average price | $452 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Wisconsin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 27, 2026.
Use the filters below to find and compare flights from Ontario to Wisconsin that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioMinneapolis
ONT - MSP
ONTMSP
Ontario
Fri 4/17
12:59 am-11:58 pm
1 stop20h 59m
Minneapolis St Paul
Wed 4/29
11:15 am-7:31 am
1 stop22h 16m
$196
OntarioMilwaukee
ONT - MKE
ONTMKE
Ontario
Wed 4/22
10:15 pm-9:05 am
1 stop8h 50m
Milwaukee-Mitchell
Mon 4/27
2:50 pm-9:00 pm
1 stop8h 10m
$337
OntarioChicago
ONT - ORD
ONTORD
Ontario
Thu 4/30
1:40 pm-11:57 pm
1 stop8h 17m
Chicago O'Hare Intl
Mon 5/4
8:09 pm-10:35 pm
Nonstop4h 26m
$351
OntarioChicago
ONT - ORD
ONTORD
Ontario
Wed 4/22
10:30 am-10:55 pm
2 stops10h 25m
Chicago O'Hare Intl
Wed 4/29
6:15 am-3:05 pm
2 stops10h 50m
$359
OntarioMinneapolis
ONT - MSP
ONTMSP
Ontario
Thu 5/7
12:40 pm-11:00 pm
2 stops8h 20m
Minneapolis St Paul
Mon 5/11
6:10 pm-11:05 pm
2 stops6h 55m
$373
OntarioMadison
ONT - MSN
ONTMSN
Ontario
Fri 5/1
12:49 pm-10:27 pm
1 stop7h 38m
Madison Truax Field
Tue 5/5
2:41 pm-11:44 pm
2 stops11h 03m
$374
OntarioGreen Bay
ONT - GRB
ONTGRB
Ontario
Thu 4/30
12:49 pm-11:01 pm
1 stop8h 12m
Green Bay Austin-Straubel
Sat 5/9
6:20 am-12:19 pm
2 stops7h 59m
$393
OntarioAppleton
ONT - ATW
ONTATW
Ontario
Fri 4/10
1:43 pm-11:58 pm
2 stops8h 15m
Appleton Intl
Thu 4/30
3:45 pm-10:35 pm
1 stop8h 50m
$399
OntarioChicago
ONT - ORD
ONTORD
Ontario
Sat 5/30
10:15 am-10:20 pm
2 stops10h 05m
Chicago O'Hare Intl
Wed 6/3
11:55 am-7:35 pm
2 stops9h 40m
$399
OntarioGreen Bay
ONT - GRB
ONTGRB
Ontario
Fri 5/1
10:15 pm-11:18 am
2 stops11h 03m
Green Bay Austin-Straubel
Thu 6/4
6:20 am-12:19 pm
2 stops7h 59m
$404
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Wisconsin
Have a flexible travel schedule? Discover the best time to fly to Wisconsin from Ontario with our price prediction graph.
ONT-MSP
ONT-ORD
ONT-MKE
ONT-ATW
ONT-LSE
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Wisconsin
ONT-USWI
ONT-MSP
ONT-ORD
ONT-MKE
ONT-ATW
What is the cheapest month to book a flight from Ontario to Wisconsin?
Currently, May is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $94). Flying from Ontario to Wisconsin in January is currently the most expensive (average of $265). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Ontario to Wisconsin?
Reviews of airlines servicing Wisconsin
Get insights into the airlines that provide service to Wisconsin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Wisconsin. Reviews last updated March 27, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Ontario to Wisconsin. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Wisconsin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Wisconsin
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Wisconsin by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Wisconsin by cabin class
Find flights from Ontario to Wisconsin, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Wisconsin flights
Browse other Ontario and Wisconsin flight options. Last updated on March 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Wisconsin flights
Consider these flights traveling from Ontario to Wisconsin.
Top 4 airlines flying from Ontario to Wisconsin
Discover the top 4 airlines that operate flights from Ontario to Wisconsin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$253 | Average$442 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$276 | Average$596 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$288 | Average$506 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$326 | Average$416 | FlexibilityNo cancel fee | On-time63% |